worley



(No Model.)

B. G. WORLEY.

DOOR OPENER.

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WITNESSES N. PLTERS. Phulaiflhegmphur. \mm m. 01c.

' EDWARD G. W'ORL'EY, OF NEW YORK, N. Y.

DOOR-OPENER.

.SPECIFICATION forming part of Letters Patent No. 313,464, dated March 3, 1885.

Application filed September 4, 1884. (No model.)

To all whom. it may concern.-

Be it known that I, EDWARD G. WORLEY, of the city, county, and State of New York, have invented a new and Improved Door- Opener, of which the following is a full, clear,

andexact description.

This invention relates to the door-openers used'in apartment-buildings for opening the front or vestibule door from the different stories of the building.

The invention consists in the construction and combination of parts, as will be hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a rear elevation of the opener with the back plate removed for showing the operative parts of the opener, the parts being shown in the position they assume when the keeper is forced outward for holding the door. Fig. 2 is a similar view showing the keeper withdrawn. Fig, 3 is a sectional elevation taken on the line 00 m of Fig. 1; and Fig. 4 is an edge view of the pinion used for withdrawing the keeper.

A represents the main plate of the holder. This is formed with the flange a, and is cut away at b torreceive the sliding keeper B in the ordinary way. The plate A is also recessed at c to receive the pull-bar O, and is formed also with the circular cavity d and stud e to receive the pinion D, which is adapted to be revolved by the pull-bar Gfor withdrawing the keeper B, the rack-teeth f of the bar G meshing with the cogs of the pinion D, as shown in the drawings. The revolution of the pinion D may be caused to withdraw the keeper B in various ways; but for this purpose 1 prefer to form the pinion D with the segmental flange g, and to form the keeper B with the cross-piece h, which is constantly held against the flange g by the action of the spring E, which is the mainspring of the keeper B, and serves to normally hold the keeper B forced to its most outward positionthe position shown in Fig. l-except when thepull-bar G is drawn outward for opening the door, at which time the revolution of the pinion D will cause the segmental flange g, acting as a cam against the cross-piece h, to withdraw the keeper B to the position shown in Fig. 2, the position it must assume to release the door. The pull-bar G is normally held drawn downward to the bottom of the recess a by the coiled spring F, attached at one end to the main plate A, and at the other to the stud i, formed upon the bar 0, so that the outward movement of the bar 0 for opening the door is always against the tension of the spring F, the reaction of which will replace the parts of the opener after the strain upon the wire j which connects the bar 0 with the knob in thebuildingabove, ceases, thus permitting spring E to force the keeper B out again, and the'bar O'is arranged to move longitudinally a distance which will cause the pinion D to'make a one-half revolution, or thereabout. A one-quarter revolution of the pinion D will wholly withdraw the keeper B, as will be understood from Figs. 1'

and 2, and the flange g being curved, any further movement of the pinion D will not change the position of the keeper B, so that the distance the bar 0 may be drawn beyond the point at which it gives the pinion D a onequarter revolution will be independent of the keeper B, and will be against the constantlyincreasing tension of the spring F, which thus cushions or furnishes a yielding pull for the opener, which is very eli'ective in preventing overstraining and breaking of the wire j and disarrangement of the opener. The stud t, to which the upper end of the spring F is attached, serves also as a stop to limit the out ward movement of the pull 0. The keeper B is guided in its movement by the studs 7c 70, formed at the back of the main plate A, and is limited in its outward movement by the side projections, Z Z, that are adapted to strike against the flanges a of the main plate A, as shown in Fig. 1.

G is the back plate of the opener, which is secured by suitable screws passing through the plate and entering screw'threaded openings made in the studs m m, formed at the back of the main plate A, so that this back plate serves to cover near all of the operative parts of the opener, as will be understood from Fig. 3, and from the dotted lines in Fig. 1.

Having thus described my inventiomI claim as new and desire to secure by Letters Patent 1. In a door-opener, the pinion D, provid- I 3. Inadoor-opener,the main plateA,f0rmed I0 ed with the flange g, in combination with the with the recess 0, for the pull, and the cavity keeper-B and toothed bar 0, substantially as d, for the pinion D, substantially as described.

described. 5 2. In a d00ropener, the sliding bar 0, held EDWARD G. WORLEY.

by the spring F, in combination with the keeper B, spring E, and pinion D, provided \Vitnesses: with the segmental flange g, substantially as P. J. GOUDEY, and for the purposes set forth. F. WV. WORLEY. 

